I can't pronounce either one of the Sudafed substances. One time, an old lady asked me which Sudafed work for her as she pointed to a shelf full of Sudafed plus other decongestant drugs. I told her just buy the one that you need to take the flyer and bring it to the pharmacist to get it. Others are just scam. The real one is used to make meth so they put it behind the counter.

She was surprised that the US gov would allow fake decongestant to be sold.